At what temperature do thermophilic anaerobic digesters typically operate?

Thermophilic anaerobic digesters typically operate at elevated temperatures that facilitate the breakdown of organic materials by specific microorganisms. The optimal temperature range for thermophilic processes is generally between 50 C to 60 C (122 F to 140 F). Operating at these temperatures promotes the activity of thermophilic bacteria, which are more efficient at digesting organic materials compared to mesophilic bacteria, which thrive at lower temperatures.

In this case, 60 C (140 F) is within the standard operational range for thermophilic anaerobic digestion. This temperature not only helps enhance the digestion process but also offers benefits such as pathogen reduction and faster biogas production, which are critical in the management of wastewater treatment facilities.

The other temperatures provided do not align with the typical operational standards of thermophilic digesters, as they are either too low or fall within the mesophilic range, which is not conducive for thermophilic organisms to thrive.